Title

Authors

Document Type

Article

Publication Date

9-15-1990

Department

Physics and Astronomy

Abstract

A computer-simulation model is introduced to study the transport properties of a binary fluid mixture in which the constituents of one fluid (the tracer particles) carry charges in a linear chargedensity gradient in the background charge of the second fluid. In the steady-state equilibrium, an effective conductivity o. ,(p, r) is estimated as a function of the carrier concentration p and the range of interactions r. The conductivity is observed to vary nonmonotonically with the concentration p, and it exhibits a maximum at a characteristic value p, . The conductivity decreases when the range of interaction is increased until a characteristic value r„beyond which (r & r, ) it begins to saturate as the onset of screening spans with r —r, .